Vladimir Guerrero holds up the Home Run Derby championship trophy. (Eric Risberg/AP)

Angels outfielder Vladimir Guerrero got off to a slow start, but recovered to win the 2007 State Farm Home Run Derby after receiving a new bat from David Ortiz. He defeated Toronto outfielder Alex Rios in the final round. Full story >

Opening Round
 Each player gets 10 outs to hit as many home runs as possible.
 The four players with the most home runs hit in the Opening Round advance to the Semi-Final Round.

Semi-Final Round
 Home runs totals from the first round will carry over to the second round.
 Each player gets 10 outs to hit as many home runs as possible per at bat.
 The two players with the most home runs in the Semi-Final Round advance to the Championship Round.

Championship Round
 Home runs from the first two rounds do not carry over to the Championship Round; Opening and Semi-Final Round totals are cleared from the board.
 Each player gets 10 outs to hit as many home runs as possible.
 The player who hits the most home runs in the Championship Round is declared the Home Run Derby champion.

Rules
 An out is registered when a player swings at a pitch and does not hit a home run.
 A ball hit over the fence must be fair to count as a home run.